pvl_kingdiffuse

Determine the total diffuse irradiance on a tilted surface using the King model.

Contents

Syntax

POADiffuse = pvl_kingdiffuse(SurfTilt, DHI, GHI, SunZen)

Description

This model (developed by David L. King at Sandia National Laboratories) determines the total diffuse irradiance (sky diffuse and ground reflected irradiance) on a tilted surface using the surface tilt angle, diffuse horizontal irradiance, global horizontal irradiance, and sun zenith angle. The model combines the isotropic sky diffuse model with an empirical formula for the albedo for the ground-reflected irradiance.

Inputs

Outputs

Example

SurfTilt = 30;
SurfAz = 180;
DHI = 47;
GHI = 473;
SunZen = 60;
POADiffuse = pvl_kingdiffuse(SurfTilt, DHI, GHI, SunZen)
POADiffuse =

   65.3974

References

[1] Lave, M., Hayes, W., Pohl, A., Hansen, C., 2015. Evaluation of Global Horizontal Irradiance to Plane-of-Array Irradiance Models at Locations Across the United States, J. of Photovoltaics v5(2), pp. 597-606.

See Also

pvl_perez, pvl_reindl1990, pvl_klucher1979, pvl_haydavies1980, pvl_grounddiffuse, pvl_ephemeris

Copyright 2014 Sandia National Laboratories